NDLI: Biofilm Performance in an Aerobic Fluidized Bed Reactor During the Start-Up Period

Content Provider	IEEE Xplore Digital Library
Author	Dandan Zhou Heli Wang Xiaotao Bi Shuangshi Dong
Copyright Year	2008
Description	Author affiliation: Sch. of Water Resources & Environ. Sci., China Univ. of Geosci., Beijing (Dandan Zhou; Heli Wang)
Abstract	This study investigated the performance of an aerobic fluidized-bed biofilm reactor (AFBBR) at the start-up stage. By means of cultivating bacteria naturally in a growth culture medium that has similar ingredients as the feed water for the AFBBR reactor, the seeding bacteria solution with sufficient amount of lively and well-acclimated bacteria and very low suspended solid was obtained after 4 days cultivation and acclimation. AFBBR was quickly started up in 14 days after bacteria solution was seeded, achieving a COD removal efficiency of 82.3% for a synthetic wastewater of 220 mg/L influent COD at Hydraulic Rentention Time (HRT) of 45 min. Growth of biofilm thickness was tracked and the film thickness stabilized at 24plusmn2 mum under steady state operating conditions. The course of biofilms formation was observed by an optical microscope. At the beginning, biofilm formed when some microorganisms attached onto the activated carbon particles irreversibly. As the biofilm grew and more metabolite accumulated on the particle surface, the whole particle became covered by the biofilm. Finally, mature biofilm formed and biofilm thickness growth slowed down due to the shear stress of flowing liquid. Both low liquid velocity and decreased nutrient concentration with bed height contributed to the variation of biofilm thickness of bioparticles. Bacillus was found to densely pack on the surface of the activated carbon particles, observed by SEM.
Starting Page	3100
Ending Page	3105
File Size	490795
Page Count	6
File Format	PDF
ISBN	9781424417476
DOI	10.1109/ICBBE.2008.1105
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Scanning electron microscopy Microorganisms Optical microscopy Solids Fluidization Steady-state Optical films Feeds Wastewater Inductors
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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